12160401 divided by 864 
We want to figure out the number of times 12160401 can be divided by 864.

Step 1:
The number 864 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 864

Step 2:
864 goes into 12 0 times with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Include the next digit (1) from the dividend after 12, then repeat: 121 / 864

On to step 3:
121 divided by 864 is 0 with a remainder of 121.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 121, we end up with 121.
Bring next digit (6) of the dividend behind the 121 and repeat the process: 1216 / 864

Advancing to step 4:
864 goes into 1216 1 times with a remainder of 352.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 352 after subtracting 864 from 1216.
Include the next digit (0) from the dividend after 352, then repeat: 3520 / 864

Let's proceed to step 5:
864 can be fit into 3520 4 times, resulting in a remainder of 64.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
The remainder is 64 after subtracting 3456 from 3520.
Append the next digit (4) from the dividend to 64 and continue with: 644 / 864

On to step 6:
864 can be fit into 644 0 times, resulting in a remainder of 644.
Put 0 as the next digit of the answer. 
Result so far: 140.0
If we take 0 away from 644, we end up with 644.
Append the next digit (0) from the dividend to 644 and continue with: 6440 / 864

Advancing to step 7:
The number 864 fits into 6440 7 times, leaving a remainder of 392.
Use 7 as the next digit of our solution. 
Result so far: 1407.0
Subtract 6048 from 6440 to get 392.
Include the next digit (1) from the dividend after 392, then repeat: 3921 / 864

Let's proceed to step 8:
When dividing 3921 by 864, we get 4 with a remainder of 465.
Put 4 as the next digit of the answer. 
Result so far: 14074.0
Subtract 3456 from 3921 to get 465.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4650, and continue the process.

Advancing to step 9:
When dividing 4650 by 864, we get 5 with a remainder of 330.
Record the quotient 5 as the next digit in the result. 
Result so far: 14074.5
Subtract 4320 from 4650 to get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Step 10:
When dividing 3300 by 864, we get 3 with a remainder of 708.
Write down 3 as next digit of the result. 
Result so far: 14074.53
If we subtract 2592 from 3300, we get 708.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7080, and continue the process.

On to step 11:
7080 divided by 864 is 8 with a remainder of 168.
Write down 8 as next digit of the result. 
Result so far: 14074.538
If we take 6912 away from 7080, we end up with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

On to step 12:
864 can be fit into 1680 1 times, resulting in a remainder of 816.
Record the quotient 1 as the next digit in the result. 
Result so far: 14074.5381
If we take 864 away from 1680, we end up with 816.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8160, and continue the process.

Step 13:
864 goes into 8160 9 times with a remainder of 384.
The number 9 becomes the next digit in our result. 
Result so far: 14074.53819
Deduct 7776 from 8160 and we're left with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Moving on to step 14:
The number 864 fits into 3840 4 times, leaving a remainder of 384.
The next digit of our result is 4. 
Result so far: 14074.538194
Deduct 3456 from 3840 and we're left with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Going ahead to step 15:
864 goes into 3840 4 times with a remainder of 384.
The number 4 becomes the next digit in our result. 
Result so far: 14074.5381944
The remainder is 384 after subtracting 3456 from 3840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

In conclusion, the division gives 14074.5381944 with a balance of 3.84e-06.